# define __has_feature(x) 0
#endif
+#ifndef __has_extension
+# define __has_extension(x) 0
+#endif
+
#ifndef __has_attribute
# define __has_attribute(x) 0
#endif
/// \macro LLVM_MSC_PREREQ
/// \brief Is the compiler MSVC of at least the specified version?
/// The common \param version values to check for are:
-/// * 1600: Microsoft Visual Studio 2010 / 10.0
/// * 1700: Microsoft Visual Studio 2012 / 11.0
/// * 1800: Microsoft Visual Studio 2013 / 12.0
#ifdef _MSC_VER
#define LLVM_MSC_PREREQ(version) (_MSC_VER >= (version))
+
+// We require at least MSVC 2012.
+#if !LLVM_MSC_PREREQ(1700)
+#error LLVM requires at least MSVC 2012.
+#endif
+
#else
#define LLVM_MSC_PREREQ(version) 0
#endif
-/// \brief Does the compiler support r-value references?
-/// This implies that <utility> provides the one-argument std::move; it
-/// does not imply the existence of any other C++ library features.
-#if __has_feature(cxx_rvalue_references) || \
- defined(__GXX_EXPERIMENTAL_CXX0X__) || LLVM_MSC_PREREQ(1600)
-#define LLVM_HAS_RVALUE_REFERENCES 1
+#ifndef _MSC_VER
+#define LLVM_NOEXCEPT noexcept
#else
-#define LLVM_HAS_RVALUE_REFERENCES 0
+#define LLVM_NOEXCEPT
#endif
/// \brief Does the compiler support r-value reference *this?
#define LLVM_HAS_RVALUE_REFERENCE_THIS 0
#endif
-/// \macro LLVM_HAS_CXX11_TYPETRAITS
-/// \brief Does the compiler have the C++11 type traits.
-///
-/// #include <type_traits>
-///
-/// * enable_if
-/// * {true,false}_type
-/// * is_constructible
-/// * etc...
-#if defined(__GXX_EXPERIMENTAL_CXX0X__) || LLVM_MSC_PREREQ(1700)
-#define LLVM_HAS_CXX11_TYPETRAITS 1
-#else
-#define LLVM_HAS_CXX11_TYPETRAITS 0
-#endif
-
-/// \macro LLVM_HAS_CXX11_STDLIB
-/// \brief Does the compiler have the C++11 standard library.
-///
-/// Implies LLVM_HAS_RVALUE_REFERENCES, LLVM_HAS_CXX11_TYPETRAITS
-#if defined(__GXX_EXPERIMENTAL_CXX0X__) || LLVM_MSC_PREREQ(1700)
-#define LLVM_HAS_CXX11_STDLIB 1
-#else
-#define LLVM_HAS_CXX11_STDLIB 0
-#endif
-
/// \macro LLVM_HAS_VARIADIC_TEMPLATES
/// \brief Does this compiler support variadic templates.
///
/// Implies LLVM_HAS_RVALUE_REFERENCES and the existence of std::forward.
-#if __has_feature(cxx_variadic_templates)
+#if __has_feature(cxx_variadic_templates) || LLVM_MSC_PREREQ(1800)
# define LLVM_HAS_VARIADIC_TEMPLATES 1
#else
# define LLVM_HAS_VARIADIC_TEMPLATES 0
#endif
-/// llvm_move - Expands to ::std::move if the compiler supports
-/// r-value references; otherwise, expands to the argument.
-#if LLVM_HAS_RVALUE_REFERENCES
-#define llvm_move(value) (::std::move(value))
-#else
-#define llvm_move(value) (value)
-#endif
-
/// Expands to '&' if r-value references are supported.
///
/// This can be used to provide l-value/r-value overrides of member functions.
#define LLVM_DELETED_FUNCTION
#endif
-/// LLVM_FINAL - Expands to 'final' if the compiler supports it.
-/// Use to mark classes or virtual methods as final.
-#if __has_feature(cxx_override_control) || LLVM_MSC_PREREQ(1700)
-#define LLVM_FINAL final
-#else
-#define LLVM_FINAL
-#endif
-
-/// LLVM_OVERRIDE - Expands to 'override' if the compiler supports it.
-/// Use to mark virtual methods as overriding a base class method.
-#if __has_feature(cxx_override_control) || LLVM_MSC_PREREQ(1700)
-#define LLVM_OVERRIDE override
-#else
-#define LLVM_OVERRIDE
-#endif
-
#if __has_feature(cxx_constexpr) || defined(__GXX_EXPERIMENTAL_CXX0X__)
# define LLVM_CONSTEXPR constexpr
#else
#define LLVM_ATTRIBUTE_NORETURN
#endif
+#if __has_attribute(returns_nonnull) || __GNUC_PREREQ(4, 9)
+#define LLVM_ATTRIBUTE_RETURNS_NONNULL __attribute__((returns_nonnull))
+#else
+#define LLVM_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
/// LLVM_EXTENSION - Support compilers where we have a keyword to suppress
/// pedantic diagnostics.
#ifdef __GNUC__
# define LLVM_FUNCTION_NAME __func__
#endif
-#if defined(HAVE_SANITIZER_MSAN_INTERFACE_H)
-# include <sanitizer/msan_interface.h>
-#else
-# define __msan_allocated_memory(p, size)
-# define __msan_unpoison(p, size)
-#endif
-
/// \macro LLVM_MEMORY_SANITIZER_BUILD
/// \brief Whether LLVM itself is built with MemorySanitizer instrumentation.
#if __has_feature(memory_sanitizer)
# define LLVM_MEMORY_SANITIZER_BUILD 1
+# include <sanitizer/msan_interface.h>
#else
# define LLVM_MEMORY_SANITIZER_BUILD 0
+# define __msan_allocated_memory(p, size)
+# define __msan_unpoison(p, size)
#endif
/// \macro LLVM_ADDRESS_SANITIZER_BUILD
#define LLVM_EXPLICIT
#endif
-/// \macro LLVM_STATIC_ASSERT
-/// \brief Expands to C/C++'s static_assert on compilers which support it.
-#if __has_feature(cxx_static_assert) || LLVM_MSC_PREREQ(1600)
-# define LLVM_STATIC_ASSERT(expr, msg) static_assert(expr, msg)
-#elif __has_feature(c_static_assert)
-# define LLVM_STATIC_ASSERT(expr, msg) _Static_assert(expr, msg)
-#else
-# define LLVM_STATIC_ASSERT(expr, msg)
-#endif
-
-/// \macro LLVM_ENUM_INT_TYPE
-/// \brief Expands to colon followed by the given integral type on compilers
-/// which support C++11 strong enums. This can be used to make enums unsigned
-/// with MSVC.
-#if __has_feature(cxx_strong_enums) || LLVM_MSC_PREREQ(1600)
-# define LLVM_ENUM_INT_TYPE(intty) : intty
-#else
-# define LLVM_ENUM_INT_TYPE(intty)
-#endif
-
-/// \brief Does the compiler support C++11 semantics for strongly typed forward
-/// declared enums?
-#if __has_feature(cxx_strong_enums) || LLVM_MSC_PREREQ(1700)
-#define LLVM_HAS_STRONG_ENUMS 1
-#else
-#define LLVM_HAS_STRONG_ENUMS 0
-#endif
-
/// \brief Does the compiler support generalized initializers (using braced
/// lists and std::initializer_list). While clang may claim it supports general
/// initializers, if we're using MSVC's headers, we might not have a usable
#define LLVM_HAS_INITIALIZER_LISTS 0
#endif
+/// \brief Mark debug helper function definitions like dump() that should not be
+/// stripped from debug builds.
+// FIXME: Move this to a private config.h as it's not usable in public headers.
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+#define LLVM_DUMP_METHOD LLVM_ATTRIBUTE_NOINLINE LLVM_ATTRIBUTE_USED
+#else
+#define LLVM_DUMP_METHOD LLVM_ATTRIBUTE_NOINLINE
+#endif
+
#endif
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